Turning-machine.



' u. N. Toms.

TUBNiNG MACHINE.

(Applicatim 'med June 2e, 189,9.;

Patented Apr. 23, |9014.v

(No Model.) 4 Shaets-vShee'k 2.

No. 672,463- Patented Apr. 23, wm.

' a. N. 'rom-s.

TURNING MACHINE.

l (Application led June 26, 1899.)

4 Sheets-Sheet 3.

G@ orge om,

Jiffy.

Patented Apr. 23, 19m: a. N. Toms.

TURNING mAcHme.

Application med Jun@ 2e, 1399.;

e :NITED Stearns GEORGE N; TOMS,

arnnrr rrroi..

'runtime-MACHINE.

srnclnrontrroiv femme part ef Lettere Patent No. cranes, detect April 23, 190i.

Application filed June 26, 1899. Serial No. 721,913. (No model.)

To tZZ whom t may concern.-

Be it known that I, GEORGE N. TOMS, a citizen of the United States, residing at Revere, in the county of Suffolk and State of Massachusetts, have in vented certain new and useful Improvements in Tuining-ll/lachines, of which the following is a specification, reference being had therein to the accompanying 7, 8, 9, and 1U illustrate details hereinafter referred to.

My invention relates to turning-machines in which the knife-carrier is rotary and in which the stock may be rotated together with the knives or may be kept stationary, as desired; and the objects of my invention are, first, to provide a knife-carrier which will insure the making of a shearingA cut by the knives; second, to provide means for carrying the stock completely over the knife-carrier, thereby insuring a perfectly plane cut; third, to provide means for raising one end of the stock independently of` the other; fourth, to provide means for raising the stock with relation to the knife-carrierV to obtain two or more cuts; fifth, to provide means for rotating the stock a given portion of a complete rotation; sixth, to provide means for preventing vibration of the stock, thereby insui-ing a smooth even cut, and, seventh, to

provide means for holding and cutting stock of great length.

In the drawings illustrating the principle of my invention and the best mode now known to me of applying that principle, (see Fig. 1,) A is the supporting-frame of the machine, in the lower part of which are journaled the shafts A and A2. Fast upon the shaft A are the pulleys o, a and @zand a3, and loose upon the same shaft is the pulley a4. Fast upon the shaft A2 sre the frictiorrdisk a6 and the pulley a5, which is belt-connected to the pulley In the upper part of the frame Ais journaled a'knife-carrier B, the faces b of which are twisted or warped surfaces. 1n these faces b are formed T-shaped slots hx, in which are adjustably secured knives b', formed with slots h2. These slots h2 permit the adjustnient of the knives for different depths of cut. Fast on the ends of the knife-carrier B are the pulleys b3 b4, which are belt-connected to the pulleys ot d', respectively, on shaft A. Slidable from front to rear onways on the top of the side standards of the frame .A is the platen O, and slidalole on the platen O from side to side of the machine is the saddle D, which carries a shaft d, upon which is free to rotate the curved tail-stock plate d2. Fast upon the platen O is the saddle D', which carries a shaft d', upon which is free to rotate the head-stock plate di. and tail-stock plate d2 are rotated upon their respective shafts CZ and CZ by the mechanism shown in sectional View, which is a section on line 5 5 of Fig. 3, and this mechanism is duplicated in head-stock and tail-stock, except that the arm d10, collar di), locking-bolt d, and spring cllzare absent from the tail-stock. Into the saddles Dl and D is secured the' socket d4, over which passes the sleeve d5, (see Fig. 6,) provided with a square screw-thread at its upper end and with lugs d6 d5 at its lower end. Over the upper end of the sleeve d5 screws the capstan-headed screw-cap di', to which is secured the sprocket-Wheel d8. Encircling the upper portion of the screw-cap CF is the collar (Z9, from which projects Van arm d1, through the central portion of which passes a locking-bolt d, controlled by a spring d. The inner end of the locking-boltcl11 engages in holes recessed at intervals in the upper convex portion of the scrcw-cap di. Passing downwardthrough the sprocket-wheel d8, screw-cap (17, and sleeve d5 and with its lower end resting on the bottom of the socket d4 is the screw dlg, tothe upper portieri of which is secured the hand-wheel du. A check-nut CX15 serves to secure the screw (Z13 to the sprocketwheel d8. The two sprocket-wheels d8 are connected by the endless chain and rod d1, Fig. l. Pivoted on the stud e, projecting from the frame A, is the handdever E, which controls a collar a, that' fits in a circumferential groove in the friction-roll e2, keyed to the shaft e3. Journaled in lugs projecting from the frame A is a vertical shaft. cl, pro- The head-stock plate d3' IOO vided at its upper end with a handle and with an eccentric eiat its lowerend. (See Fig. 2.) Under the'action of the eccentric e5 the bearing e6 of the shaft e3 slides back and forth to throw the friction-roll e2 into and out of contact with the friction-disk a6. Fast on the shaft e3 is the pulley e7, which is belt-connected With the pulley F, and fast upon the same shaft with the pulley F is the pinion f, which meshes with the spur-gear f2 through the intermediate gear f. (See Fig. 4.) The gear f2 is secured to the live-spindle f3 and has formed on its inner` side a circular axially-projecting flange or spacing-rimf4, which is provided with radial holes (See Fig. 7.) The inner end of a lever f6 is in the form of a collar which encircles the bearing fi'of the live-spindle f3, and fulcrumed at fwr on the lever f6 is a lever f8, integralwith which is a lugfg, carrying a pin 10. The inner end of the lever fecarriesthe locking-bolt f, which is controlled by a spring f1;2 and` engages in a recess fm in the bearing f7.

leverf. Journaled in the side frames or standards of the machine is the rocker-shaft` A4, fasty upon which is the` wheel G. Figs. 1, 2, and 4.) The inner. end offv theleverfg (see Figs. l and 8) is in the form of a collar. g', which. encircles the shaft A4; Pivotedn on the lever gis the thumb-latch g2., through a lug-.g3 upon which passes the rod g4. The innerend of theV rod g4engages in holes. g5, formedin the rim of pulley G,thereby locking the lever g to the Wheel G. A spring giitends to force the rod g4 into the holes g5. Fast uponeach endof the shaftA4 are the rocker-arms H, (see Figs. l, 2, and 3,) to the upperends of which are jointed the links 71,-. The other ends of the links h are pivotally connected` with the` platenC, Fast upon one end ofy the screw-shaft K- (seeFig. 9, which is a sectionalview on line.9 9 ofFig. 3) isthe` hand-wheel 7c, andV fast upon its4 other endis, the bevel-gear 7a', Fig. 2, which meshes withI a similarbevelfgear 702, fast upony one end of the transversely-extending shaft 703, Fig.3, journaled in the rear portion of frame A. On, the other end of the shaft 7c3 is a bevel-gear 7c, whichis similar to the gear 752-. rPhe screw-shaft'. 7a44 has fast upon its rear end a bevel-gear. 7o?, which is similar to the bevel-gear 7c' and which meshes with the bevel-gear on the'shaft 7a3.y Secured to the platen C by screw-bolts 708 are the lug-nuts 769, through which pass the screw-V shafts K and 7a4. To prevent the vibration of the stock, and thus to insu rea smoothcut, (see Figs. l and 3,);1 provide a center-rest L, which slides from front` to rear on a wayZ in the frame ofthe machine. Freeto slide transversely. in the upper .portion of this center-reist is the saddle L', from which projectL lugs Z'.. Pivoted on shafts Z2, mounted in the lugsZ', are the clamping-forksl, which are adjusted vertically by thumb-screws Z4. Ad-

'justably secured to the platen C is a curved arm Z5, (see Fig. 4,) the lower end of which The lever. f8- is controlled by a spring f-l4, secured to the (See.`

engages a slot Z (see Fig. 3) in the lever Z7. The lever Z7 is pivoted at one end on the frame of the machine and at the other end jointed to one end of a link Z8, the other end of which is pivotally connected to the base of the center-rest L.

In Fig. 10 is shown a perspective view of One of a pair of brackets which are designed to support long stock during the operation of turning. The saddle portion M slides on top of the platen C and has connected to it, by means of the adjusting-screw m, the L-.shaped vertical slide m. The stock rests upon the projecting arm fm2 and is held in place by the clamp-screw m3.

The operation of my machine is as follows: The stock is secured between the live-center f4 and tlledead-center Z162 One ofthe features ofrmy` machine isthelindependent verticaladjustability of. the twocenters, which permitsthe, eutY to bevaried-from endato end of the stock. To raise or. lower. thecenter, the cheek-nutd15 is loosened; and the `hand- `wheel turned. in the proper. direction. The screw-cap Z7 is thus caused to moveup or down outhe screwd. and draws withit 'the sleeve di?, thelugsI of which engageu-nder the plate-dorplate C72, dependingonwhichscrew jdls is turned. Another feature of my machine isthat it provides means for. cutting shapes of polygonalv sectionA or shapes, ofv

Acurved:-section. If a shape. havinga polygonal section is to be cut, the live-fspi-ndle, xand thereforethe stock, does.l notrotatecon- 'tinuously, butis turnedv by thestep-by-step lor. spacing mechanismfsho-wnin Fig; 7. The shaft e4 isturned so thatr theeccentricon the end of. the shaft efcauSQS.; the,v bearing e to slide away from thefrietion-disk-af, thereby :carryingthefriction.- roll e2: outv ofI contact with the frictiondisk a6; movedso as to bring thestock against-the knives by. thefollowing means; Theoperator graspstheleven gand. brings the inner end ,of the rod g4opposite-onevofthe holesin the rim ofv the Wheel G. The th umhflateh g2 isl ;thenrrelease d and` the rod g4 engages in the holeg inA therwheel` G, thereby locking.. the leverg to thewheel G. By moving thelever g the. rocker-shaft A4 is` now turned and the rocker-armsl-I, through the links 77., move the,

platen C back and forth over the knives. In .my newE machine the stock may be carried completely over the knives, thus insuringa vplanefsurface, instead of a stirfacewvhich is cylindrical. The means to ymove the stock icompletely over thekniues is one of the feaitures offmy invention. Instead of using the lever gv the hand-wheel 7c may be turned for the same purpose. The bolts 7a must, however, be first put. in place, securing the lug-v lnuts lo to the platen C. The rotation of screwshaft K, through the bevel-gears 7c', 7a2, 766, and 767 and the shaft 7c3, causes the screwshaft 764 to rotate, and the lug-nuts 709 move Von ther screw-shafts K7r4, carrying the platen C with them. As. the platen C is movedit 'll-he. platenV Gis:

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carries with it the curved arm Z5, and through the lever Z7 and link Z8 the center-rest L is moved into a position in Which the clampingforks Z3 press against the stock and hold it irmlyagainst vibration. Theclamping-forks Z3 may be adjusted vertically by the thumbscrews Z4 and transversely by the saddle. This reciprocating back-rest is a feature of my invention.

In order to save power, and more especially to prevent the wood from being torn out and an uneven cut being obtained, I provide means by which more than one cut may be obtained with the platen C in the same position. The means so provided are a feature of my invention. To obtain these several cuts, the stock after receiving its first or roughing cut is lowered as a whole by the simultaneous lowering of the live-spindle andthe dead-spindle. This lowering is done by tightening the check-nuts dw, thus securing the screw Z13 to the sprocket-wheel CZ8 and screw-cap CZ7 andv then turning one sprocket-wheel d8 by means of the arm d10, the rotation being communicated to the other sprocket-wheel d8 by the chain and rod dw. As the inner ends of the screws d13 rest upon the bottom of the sockets CZ, the rotation of the screw-caps @Z7 causes the sleeves (Z5, which support the plates d2 d3, to move downward, carrying the live-spindle and the dead-spindle down.

To form the desired polygonal shape, the stock is, after making the finishing cut on one side, turned by the mechanism shown in Fig.7. The operator grasps the leverfG and presses down the lever f8, thereby drawing the pinj110 out of the holef5 in spacing-rim f4 and the bolt j"11 out of the recess f5. The lever]c6 is then raised until the pinf10 is brought opposite the proper hole f5, when the lever f8 is re leased and the pin flo engages in the hole. The lever]L16 is then lowered, and when the bolt f is brought opposite the recessf15 the spring f12 forces the bolt f into the recess, thereby locking the live-spindle against rotation.

If the live-spindle is to be rot-ated continu-` ously, the shaft e4 is turned so as to bring the friction-roll e2 into contact with the frictiondisk al. The leverf8 is secured in any suitable manner with the pinf10 out of engage-I ment with the spacing-rim f4. The brackets shown in Fig, l0 are used when eXtra long lengths of wood are to be turned, and when these brackets are used the saddles D D' and their connected mechanism are removed from the platen C. I

The advantages of my machine are, rst, the shearing cut obtained by reason of the knife-carrier being provided with twist or warped faces; second, a plane cut is obtained by providing means for carrying the stock completely overthe knives; third, a smooth cutis obtained by preventing vibration of the stock; fourth, the wood is not torn out, the total cut may be taken in two or more cuts; fifth, a saving of power; sixth, a shape having a polygonal section or one having a curvilinear section may be obtained on the same machine; seventh, the cut maybe varied from one end of the stock to the other by the independent adjustment of the centers, and, eighth, means are provided for turning extra long lengths of wood;

What I claim isl. In a turning-machine, the combination of a supporting-frame; arotatableknife-carrier whose knife-carrier faces are warped su rfaces and are formed with T-shaped slots; knives mounted on said carrier; mechanism for rotating said knife carrier; a reciprocating platen; mechanism mounted on said platen for carrying the stock consisting of two saddles, the first fast upon said platen, .a headstock plate pivoted to said saddle; the second saddle slidablefrom side to side on said platen; a tail-stock plate pivoted to said second saddle; live and dead centers in respective head and tail stock plates and means to adjust said centers vertically relatively to each other and the rotating knives; mechanism for reciprocating said platen; and mechanism for rotating the stock.

2. As a new article of manufacture, an adjustable rest for turning-machines, comprising a supporting base portion; a saddle mounted in ways in said base, and transversely slidable therein; lugs on said saddle; clamping-,forks pivoted on a shaft mounted in said lugs; and means to adjust said clamps vertically.

3. In a turning-machine, the combination of a supporting-frame; a rotatable knife-carrier; knives mounted on said carrier; mechanism for rotating said lmite-carrier; a reciprocatory platen; mechanism mounted on said platen for carrying the stock; mechanism for reciprocating said platen; and mech- IOO anism for rotating the stock consisting of two saddles, theiirst, fast upon said platen,a headstock plate pivoted to said saddle; the second saddle, slidable from side to side on said platen; a tail-stock plate pivoted to said sec.- ond saddle; live and dead centers in respective head and tail stock plates and means to adjust said centers vertically relatively to each other and the rot-ating knives.

4. In a turning-machine, the combination of asupporting-frame; a rotatable 'knife-carrier; knives mounted `on said carrier; mechanism for rotating said knife-carrier; a reciprocatory platen; mechanism mounted on said platen for carrying the stock; mecha ism for reciprocating said platen completely over the knives; and a step-bvstep mechanism for rotating the stock consisting of a spacing-wheel fast to the live-spindle; a lever whose inner end encircles a bearing of the live-spindle; a set-,ond lever fulcrumed on said first lever, and carrying a locking-bolt controlled by a springand engaging a recess in said bearing; a spring controlling` said second lever; a lug integral with said lever, and a pin in said lug to engage said spacing-Wheel to rotate the stock.

lill;

l dead-spindle; alive-spindle; aspacing-wheel fast on said live-spindle; a lever whose inner end encircles a bearing of the live-spindle; a second lever fulcrumed on said first lever and carrying a locking-bolt, controlled by a spring and engaging a recess in said bearing; a spring controlling said second lever; and means whereby said second lever may engage said spacing-Wheel.

6. In a turning-machine,the combination of a supporting-frame; a knife-carrier; knives mounted on said carrier; mechanism for rotating said knife-carrier; a platen; a livespindle carried by said platen; a dead-spindle carried by said platen; mechanism for adjusting said livespindle independently of.

said dead-spindle consisting of a saddle' fast on said platen; a head-stock plate pivoted to said saddle and containing saidliVe-spindle; and means to raise andlower said plate; and mechanism for rotating said live-spindle.

7. In a turning-machine,the combination of av supporting-frame; a knife-carrier; knives mounted on said carrier; a platen; a livespindle carried by said platen; a dead-spindle carried by said platen; mechanism for adjusting said dead-spindle independently of said live-spindle; and consisting of a saddle slidable from side to side on said platen, a tail-stock plate pivoted to said saddle and containing said dead-spindle, and means to raise and lower said plate; and mechanism for rotating said live-spindle.

8. In a turning-machine,thecombination of a supporting-frame; a` knife-carrier; knives mounted on said carrier; a platen; a livespindle; a dead-spindle; and mechanism for raisingA and lowering said` spindles simultaneousl y, comprising two saddles, the first fast upon said platen, a head-stock plate carrying said live-spindle, and pivoted tol said saddle; the second saddle slidable from side to side on said platen, a tail-stock plate pivoted to said second saddle, and carrying said dead- 4spindle; screws passing through the head and tail plates and bearingupon their respective saddles; sprocketwheels secured to said screws; an endless chain operatively connecting said wheels, all designed for simultaneously raising and lowering said spindles.

9. In a turning-machine,the combination of a supporting-frame; a knife-carrier; knives mounted on said carrier; a platen; .mechan-` ism mounted on said platen for carrying the stock; a reciprocatory rest for preventing the vibration of the stock; said rest comprising a supporting base portion; a saddle mounted in ways on said base, and transversely slidable therein; lugs on said saddle, clampingforks pivoted on a shaft mounted in said lugs; means to adjust said clamps vertically; and means for reciprocating said rest.

10. The combination of a live lspindle; mechanism carrying said live-spindle; a deadspindle; mechanism carrying said dead-spincames dle; and mechanism for adjusting said spindles vertically independently of each other,

said mechanism consisting of two saddles,

head-stock plate, and tail-stock plate; carrying live and dead spindles, each of said plates having a socket secured therein, a threaded sleeve passing over said socket, a screw-cap screwed over the end of the sleeve; a collar encircling the upper portion of screw-cap and having an arm projecting therefrom; a locking-bolt passing through said arm, holes in upper convex portion of screw-cap which are engaged by said bolt, a screw provided with a hand-wheel and passing down through screwcap, sleeve and resting on socket in saddle.

ll. The combination of a live spindle; mechanism carrying said live-spindle; a deadspindle; mechanism carrying said dead-spindle; and mechanism for adjusting said spindles vertically at the same time, said mechanism comprising two saddles., theirst fast upon said platen, ahead-stock plate carrying said live-spindle, and pivoted to said saddle; the second saddle slidable from side to side on said platen, a tail-stock plate pivoted to said second saddle, and carrying said deadspindle; screws passing through the-head and `tailplates--and bearing upon their respective saddles; sprocket wheels secured tosaid screws; anendlesschain operatively connecting said wheels, all designed for simultaneously raising and lowering said spindles.'

12. The combination of asupporting-frame; aplatencarrying a live-spindle and a deadspindle;said spindles; aknife-carrier; knives mounted-.in said carrier; mechanism forv rotating said, knife-carrier; mechanismunder control of the operator for turning the livespindle a, given portion of av rotation; and

for locking the live-spindle while the knives,

are cutting the stock; consisting of aspacingwheel fast; to the live-spindle; a-lever whose inner endfencircles a bearing of the live-spindle; a second. lever fulcrumed on said first lever, and carrying a locking-bolt controlled bya spring and engaging aV recess in said bearing; a spring controlling said second lever, a lug integral with said lever, and a pin in said lug to engage said spacing-wheel, to rotate the stock, and mechanism for moving the stock back and forth over the knives, said mechanism comprising` a longitudinal screw-shaft provided at its ends with bevelgears fixed thereto; transverse screw-shafts provided with bevel-gears, and hand-wheels, said bevel-gears on said longitudinal and transverse screw-shafts meshing with each other respectively; and means whereby said platen is operatively connected to said transverse screw-shafts.

In testimony 'whereof I affix my signature `in presence of two witnesses.

GEORGE N. TOMS.

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